Homework SourseUnit 5 Chapter 14 Assignment Comments are REQUIRED Direction
Unit 5 Chapter 14 Assignment
Comments are REQUIRED
Directions
The files must be called <LiFiUnit5Ch14.java> (driver program)
- LiFiPizza.java
- LiFiCheese.java (which extends LiFiPizza)
The files must be called as specified above, (LiFi = Your Last Initial Your First Initial)
Proper coding conventions required the first letter of the class start with a capital letter and the first letter of each additional word start with a capital letter.
Style Components
Include properly formatted prologue, comments, indenting, and other style elements
Topics to cover in Code (please indicate in comments)
Topics with * are covered in this assignment. Ensure you use every item listed below in your completed assignment.
*Object class
*equals method
toString method
*Polymorphism
Abstract
Interfaces
Protected access modifier
Basic Requirements
Write a super basic Pizza ordering system using Polymorphism.
The setCrust method varies based on which type of Pizza is instantiated.
LiFiUnit5Ch14
Get input for Cheese or Meat pizza.
- Declare a single pizza to be used for both Cheese and Meat
- If a Meat pizza is selected
- instantiate your pizza as a LiFiPizza pizza with zero arguments
- setType to Meat via the constructor
- If a Cheese pizza is selected,
- Instantiate your pizza as a LiFiCheese pizza with zero arguments.
- Output of your order varies based on Cheese or Meat (See Example)
LiFiPizza.java
- Default constructor should set pizzaType to Meat and cost to $5
- setCrust()
- Call setCrust and allow selection of Thin or Thick crust
- setIngredients()
- and allow for only 1 ingredient
- setCost()
- add $2 to the initial cost which is $5
- Include accessor methods as needed.
- Ensure all instance variables are private
LiFiCheese.java
- Set the type to cheese via the constructor body.
- setCrust() – (notice this is different from LiFiPizza setCurst method)
- Automatically set it to “Thin” crust, no option to change, sorry.
Sample
Your output will vary based on Input.
Solution
Answer:
//LiFiPizza.java
import java.io.*;
import java.util.*;
import java.lang.*;
//LiFiPizza class
class LiFiPizza
{
//pizza-type
protected String pizzaType;
//pizza-crust
protected String crust;
//pizza ingredients
String ingredients;
//pizza-cost
protected float pizzaCost;
//default-constructor
LiFiPizza()
{
//set pizza type, cost, crust
pizzaType=\"Meat\";
pizzaCost=5;
crust=\"Thin\";
ingredients=\"\";
}
//set the pizza crust
public void setCrust(String pCrust)
{
crust=pCrust;
}
//set ingredients
public void setIngredients(String ing)
{
ingredients=ing;
}
//set pizza-type
public void setPizzaType(String type)
{
pizzaType=type;
}
//set pizza cost
public void setCost()
{
pizzaCost +=2;
}
//Return the string representing Pizza
public String toString()
{
return \"Your ordered:\ \"+getPizzaType()+\" Pizza\ \"+ingredients+\" (+$2.00)\ \"+crust+\" crust\ Total cost of $\"+pizzaCost;
}
//get pizza crust
public String getCrust()
{
return crust;
}
//getpizza ingredients
public String getIngredients()
{
return ingredients;
}
//Get pizzcost.
public float getPizzaCost()
{
return pizzaCost;
}
//GET PIZZA-TYPE
public String getPizzaType()
{
return pizzaType;
}
}
//LiFiCheese.java
class LiFiCheese extends LiFiPizza
{
//default-sonstructor
public LiFiCheese()
{
//super-class constructor
super();
//set piza-type
super.setPizzaType(\"Cheese\");
}
//set pizaa crust to thin
public void setCrust()
{
super.setCrust(\"Thin\");
}
//method to represent the cheese-pizza
public String toString()
{
return \"Your Ordered:\ \"+super.getPizzaType()+\" Pizza\ \"+super.getCrust()+\" crust\ Total cost of $\"+super.getPizzaCost();
}
}
//LiFiUnit5Ch14.java
public class LiFiUnit5Ch14
{
//main method
public static void main(String[] args)
{
//Pizza object
LiFiPizza pp;
//variables
String pizTyp;
String pCrust;
String ing;
//Scanner object sss
Scanner sss=new Scanner(System.in);
//Get pizza type
System.out.print(\"What type of pizza would you like <Cheese or Meat>:\");
pizTyp=sss.nextLine();
//If cheese-pizza is selected
if(pizTyp.equals(\"Cheese\"))
{
//instantiate cheese-pizza
pp=new LiFiCheese();
//print cheese-pizza
System.out.println(\"\ \"+pp.toString());
}
//if meat-pizza is slected
if(pizTyp.equals(\"Meat\"))
{
//get crust-type
System.out.print(\"Thick or Thin crust:\");
pCrust=sss.nextLine();
//get ingredients
System.out.print(\"What ingredients, sorry, only 1:\");
ing=sss.nextLine();
//instantiate meat-pizza
pp=new LiFiPizza();
//set crust,cost, ingredients
pp.setCrust(pCrust);
pp.setIngredients(ing);
pp.setCost();
//print meat-pizza
System.out.println(\"\ \"+pp.toString());
}
}
}
Sample output:
Run1:
sh-4.3$ javac LiFiUnit5Ch14.java
sh-4.3$ java -Xmx128M -Xms16M LiFiUnit5Ch14
What type of pizza would you like <Cheese or Meat>:Cheese
Your Ordered:
Cheese Pizza
Thin crust
Total cost of $5.0
Run2:
sh-4.3$ java -Xmx128M -Xms16M LiFiUnit5Ch14
What type of pizza would you like <Cheese or Meat>:Meat
Thick or Thin crust:Thick
What ingredients, sorry, only 1:Sausage
Your ordered:
Meat Pizza
Sausage (+$2.00)
Thick crust
Total cost of $7.0
